Pegging-machine



(No Model.)

3 Sheets-Sheet 1.

E. MERRITT.

PEGGING MACHINE.

Patented Aug. 29, 1882.

(No Model.) 3 Sheets-Sheet 3.

E. MERRITT.

PEGGING MACHINE. No. 263,559. Patented Aug. 29, 1882.

yam/9%; 427M llmren STATES ED\VARD MERRITT, OF BR PEGGING- OCKTON, MASSACHUSETTS.

MACHINE.

SPECIFICATION forming partof Letters Patent No. 263,559, dated August 29, 1882.

i Application filed May 1, 1882. (Noinodel) To all whom it may concern.-

Be it known that I, EDWARD MERRITT, a citizen of the United States, residing at Brockton, in the county of Plymouth and State of Massachusetts, have invented certain new and useful Improvements in Nailing lllaehines for Boots and Shoes; and I do hereby declare that the same are fully described in the following specification and illustrated in the accompanying drawings.

This invention relates to improvements in nailing-machines for boots and shoes, and it is carried out as follows, reference being had to the accompanying; drawings, in which- Figure 1 represents a front elevation of the machine and its standard. Fig. 2 represents a side elevation of the machine, showing its horn and standard in section. Fig. '3 represents an enlarged central longitudinal section ot' the machine. Fig. 4 represents a front view of the machine, showing the swinging head and hopper as removed. Fig. 5 represents an inside view of the swinging head. Fig. 6 represents a vertical section on the line A B, shown in Figs. 4 and 5. Fig. 7 represents a detail view of mechanism for operating the swinging head of the machine. Fig. 8 represents a vertical section on the line C D, shown in Figs. 4 and 5. Fig. 9 represents a horizontal section on the line E F shown in Fig. 3, showing the spring-gage, nail-separator, and raceways. Fig. 10 represents a section on the line G H, shown in Fig. 9; and Fig. 11 represents a detail sectional view of the yielding and detachable throat.

Similar letters refer to similar parts wherever they occur on thcdifferent parts of the drawings.

a in Figs. 1 and 2 represents the standard, to the upper end of which the nailing-machine is secured. The front ofthe standard a is provided with arms, projections, or brackets I) and c, which serve as bearings for the verticallyadjustable spindle (I, which carries the born 6 on its upper end, the lower end of said horn having for this purpose a hollow hub, a, tittiug loosely on the upper end of the spindle d and resting on a collar, (1, thereon, as shown in Figs. 1 and 2.

d is a nut on the upper end of the screwthreaded portion of the spindle d, to hold the hub e in its proper place on said spindle d.

e is the upper end of the horn e, and serves to support the shoe when in process of being nailed. The born c is loose to turn round on the spindle d, which latter is vertically adjustable in the bearings Z) and o, by means of the treadle-leverf, hinged atf to the lower end of the standard a, and the slotted link 9, having slot 9, through which the pinf passes loosely, said pin being secured firmly to the forward part of the treadle-leverf, as shown in Fig. 2. The upper end of the link 9 is hinged at g to the lower end of the, horn-spindle d, as shown. To the treadlc-leverf, between the pinsf and f, is hinged, at h, the rod or bar h, which passes through a vertical perforation, c, in the bearing 0, and is provided in its upper end with a wedge, h", that passes through a perforation, t, in the horizontally-adjustable locking-bar 'i, the forward end of which is adapted to look into a recess, 6', on the spindle d, so as to hold the siiid spindle in a rigid position at the highest point of the horn, which it carries during the driving of the nails. The bolt is automatically held in a forward locked hind it, as shown in Fig. 2. By pressing down on the treudle-leverfthe locking-hart is caused to recede from the recess d( by the action of the wedge-bar h h, and by farther depressing the leverf its pin f acts on the slotted link g g to lower thespindle d and its horn e sufficientlyto allow the work to be placed on the top of the horn. By releasing the pressure on the treadle-leverfthe spindle d and its horn e are automatically caused to ascend by the influence of the coiled spring it, placed around the spindle d, between the bearing 0 and the col- -lar it, until the recess d comes opposite to the locking-bar 2', when the latter is caused to look into it by the influenceof the spring 2', as shown in Figs. 1 and 2. k is another adjustable collar on the spindle d, which serves as a stop against the under side of the bearposition, as shown. Thus it will be seen that the horn e is vertically adjustable to admit the work to be placed upon its upper end and to remove it therefrom when nailed, but during position by means of the coiled spring 7; be-

ing I) when the born c has reached its highest rot the process of nailing the boot or shoe the horn is rigidly held without yielding in a vertical direction.

f is a spring secured to the leverfand to the under side of bearing 0, so as to cause the leverf to ascend and to be held in its upper position (shown in Fig. 2) when the pressure on it is relieved.

The thr0at.-This is composed of twoparts, namely, first, a rigid piece, I, secured to the lower end of the oscillating head L--sueh rigid piece has a perforation, l, through it for receiving the awl, driver, and nails; and, secondly, a yielding nose-piece, m, having a spindle, m, and a spiral spring, m, projecting up through a perforation in the stationary throat part l, as showuinFig.11, such spring m aeting against the annular projection l in the rigid throat part l and against a collar, m, on the spindle m, and thus automatically holding the yielding nose-piece m to its lowest position,

except when forced upward more or less by the variations in the thickness of the boot or shoe sole that is supported on the upper end of the born 0 during the process of nailing, the born 0 being rigid without any vertical adjustment in nailing the sole. The object of the yielding nose-piece m is to keep the lower end of it always in contact with the upper surface of the boot or shoe sole during the progress of the work of nailing. The yielding nose-pieceat has an upwardly-projecting hollow sleeve, m, which is guided in acorrespondingperforation, l, in the rigid part Z, and such sleeve m has a countersink, m in its upper end to guide the nails properly through it when dropping from the perforation l in the stationary part l.

Prcsscrj'oot.n is the presser-foot, which is attached to the lower end of the vertically-adjustable shank a, to which is also secured, by means of the screw 0, the laterally-adjustable gage 0, to regulate the distance from the edge of the sole in which the nails are to be driven. 0 is a slot'hole in the gage 0, through which the screw 0 passes, and by means of which the gage 0 is adjusted laterally. The upper end of shank 'n is loosely supported in the vertically-adjustable sleeve a and pressed downward by the influence of the coiled springn, located within said sleeve a, as shown in Fi 3, to allow said presser-foot to yield upward and adjust itself automatically to variations in the thicknessesof theleather of the boot or shoe sole. The lower end of the sleeve n is provided with a pin or screw, a, the inner end of which projects into a groove, a, in the shank n to prevent the latter from being forced out or detached from the sleeve n by its spring a. The sleeve a is movable up and down in bearings in the forward part of the frame N, and is actuated downward by means of a cam, p, on the driving-shaft P, acting on a roll, a in the upper end of the sleeve n, and is moved upward by the influence of a spring,,p, secured to the frame N and having its forward end acting on a projection, M, in the rear of the sleeve 'n, as fully shown in Fig. 3. The object of this arrangement is to bring a pressure on the upper surface of the boot or shoe sole at all times, except when the feed takes place, and to admit an automatic adjustment of the presser-foot to the variations in the thicknesses of the sole which is operated upon.

In usingayielding throat and yielding presser-foot,combined with arigid horn,asdescribed, it is necessary to adjust the downward stroke of the awl and driver, so as to correspond with the adjustment of the yielding nose-piece of the throat and the yielding presser-foot; and for this purpose I'provide the presser-foot shank a with a wedge or inclined projection, a, as shown in Fig. 4, which actuates an inclined surface, q, in the lower end of the rocking lever g, which is hung to the head N at q and joined in its upper end at q to a horizontallyadjustable wedge, Q, introduced between the under side of packings R and the upper end of the driver and awl bar sleeve R, which latteris secured to the swinging head L, that is hung at L to the upper end of the frame-arm N, as

shown in Figs. 2, 3, and 5. The lever g has a hinge or joint at and a spring, (f, secured to the lever below such joint and pressing on the part above it for the purpose of allowing the upper end, q, of said lever to yield, if the shank-wedge a should act on the lower end, q, of said lever, when the pressure of the awl or driver bar is on. Said spring q serves also to automatically force the upper lever end, q, and the wed ge (.ginto position when such pressure on the awl or driver bar is relieved. Another spring, q", is secured to the frame-arm N, as shown in Figs. 2 and 4, and caused to act against the lever (1 below its joint (1*, so as to automatically hold the lower end of the lever q in contact with the wedge a on the presser-foot shank n.

I may prefer to construct the wedge Q in such a manner as to operate only on the driver'bar to regulate the amount of its downward stroke without changing the stroke of the awlbar, and the point of the awl to stop always at a normal distance from the under side of the sole, whether thick or thin.

SwiagiaqHead.Listheswinginghead,which is hung at L to the upper end of the stationary frame-arm N, as before stated. To the swinging head L is secured, about midway on it, a stud, r, the inner end of which rests in a block, T, which is supported and is movable in a curved groove, 1", in the front of the frame N, so as to relieve the strain on the upper fulcrumpin, L. The swinging head L is rocked on its fulcrum by means of the grooved cam s on the driving'shaft P, which actuates the lever s, attached to the shaft 8, located in hearings in the frame N. The forward end of the shaft 8 has a slotted lever, s, in which is located a block, 8 provided with a stud, 8 that projects through a slot-hole, s, in the front of the swinging head L, on the outside of which it is provided with an adjustable thumb-nut, s, by

which means the said block 8 can be raised or lowered to adjust the feed of the swinging head L accordingly. Thelever s is made adjustableou its shafts by means of set-screw 8 or equivalent device, for adjusting the throat 'for variations in the feed to its proper position in relation to the nail-delivery tube.

The awl-bar t is movable up and down in the sleeve R. It is forced down by means. of a spring, t, as usual. and is moved up against the influence of such spring by means of stud and roll 25 on the cam 25', attached to drivingshaft P, actuating a foot, t secured to the awl-bar t, as shown in Fig. 5, such foot t ,when reaching its highest position, is automatically held and locked by means of a swinging lever, t, or catch actuated to lock by means of the spring i and provided with an adjustable setscrew, t passing through it into a recess, t", in the frame N. Said screw 26 is for the purpose of relieving the catch i from the awl-bar foot 2? at the proper time, or when the head L is thrown to the commencement of its stroke, which is done by the end of such screw t striking against the side of the recess i in the frame N, by which the catch i is disengaged from and liberates the awl-bar t, which is then instantaneously forced down by the influence ofitsspring t. The lateral motion ot'the lower endof the and -bar to throw it in a line with the throat-opening and out of it to allow the driver to enter is carried out by means of the curved cam slot i in the plate 1 and a pro jection, t, on the awl-bar in the same manner as described in my patent of December 27, 1881, N .25l,453.

T is the awl secured to the lower end of the awl-bar, as usual.

u is the driver-bar, which is movable up and down in the sleeve R-downward by means of the coiled spring a, and upward aga nst theinfluenee of. said spring by means of the cam t, secured to the driving-shaft P, and a stud and roll, a, on the driver-bar uin the same manner as described and shown in my aforesaid patent of December 27, 1881.

U is the driver secured to the lower end of the driver-bar u, as usual.

The hopper a, the raceways o, raceway-cover o, nail-spreader o, and wedge o for operating the nail-spreader,as well as the wedgepicker 22 are carried out, arranged, and operated in the same manner as shown and described in my aforesaid patent of December 27, 1881. r

The springgage 'w, for the purpose ofgaging the nail for allowing the wedge-picker v to enter between the first and second nails, is arranged as-follows: Its inner end is secured to the stationary bracket to, thatserves as a guide or bearing for the wedge-picker bar a, and said spring-gage 20 has on its outer end a projeotion, w", entering through a side perforation in the nail-receiver 20', that forms the outer end of the bracket 20, and said projection is adapted to close against the lower end of the raceways a when the wedge-picker o is withdrawn and the nail-spreader'v raised, to prevent the nail from dropping into the nail-receiver to until the wedge-picker o picks it and forces it in the nail-receiver w and closes the same, at the same time forcing the nailgage to back to allow the nail to drop freely through the nail-receiver 'w and its point to rest against the upper flange, 1 of the throat. Said spring-gage w is operated by an adjustable screw, 42 in the picker-bar o, acting 011 a wedge or incline, 10 on the inside of the spring-gage w, as shown in Fig. 9. The gage w is provided with an adjustable set-screw, 10 to regulate the throw of said gages and its projection w in relation to the wedge-picker o for various sizes of nails.

The operation of the im chine is as follows The driver U being at its lowest point, and the swinging head L moved to one side to the extent of its stroke, the shoe is placed on the top of the born c by depressing the same with the foot by means of the treadlef, and by removing the pressure on said treadle the horn e is forced upward bythe influence of coiled spring is, and causing the horn spindle cl to be securely locked by the lockingbariand the heel or thinnest part of the shoe sole kept in contact with the yielding nosepiece in and presser-foot a, so that during the operation of nailing the sole, as the material increases in thickness it forces the yielding nose-piece m and presser-foot a upward, and in thus forcing the presser-l'oot upward its wedge 12 acts on the incline g on the lower end of lever, q, to move the latter, and with it the wedge Q, beneath the packing R on the driver and awl bars, and thus allowing the two latter to be forced down only sutljcielitly to drive the nail and to vary their descent to corproved nailing-ma- 1 respond with the depression of the nose-piece m and presser-foot n as the sole which is being nailed may varyin thickness. At this point the wedge-picker '0 is at its backward stroke, allowing the nails in the raceways o to be forced down against the spring-gage w. The shaftPis then set in motion by belt-power applied to its pulley X, causing the driver-bar a to be raised, and at the same time the head L is swung on its backward stroke by means of cam and levers, as described. The nose-piecem rests constantly on the shoe-sole through the whole operation, there being no pressure of the said nose-piece on the shoe-sole, except by the light spring m forcing it down. While the swinging head L is thus moving the wedge-picker o is carried forward by the spring y acting on the upper end of the lever y, hinged at y and connected in its lower end to the wedge-picker, it being released by its cam 3 on the shaft P, thus forcing one nail into the nail-receiver 20' by the screw 1: in the sliding block striking the wedge w on spring-gage w, and by forcing it back the nail is thus allowed to drop into the nail-receiver w and with its point resting against the lip l on the throat 1. When sole by the screw the swinging head L reaches the extent of its backward stroke the awl 'l is allowed to force through the throat I and to penetrate the shoet in the catch i striking against the side of the perforation t in the frame N and forcing the said catch back and unlocking it from the foot t on the awl-bar t, thus liberating the latter to the downward action of its spring t. At the time the awl 'I. enters the shoe sole the presserfeet a instantly releases its hold on the sole, and thus allows the shoe to be fed ahead by the awl and the swinging head L to a position bringing the throat'opening l and nail-receiver w in a line with each other, when the nail drops, its point resting against the side of the awl 'l. The presser'foot n is then at once forced down against the shoe-sole by its cam 11. At this time the awl '1 begins to withdraw from the sole and throat l,being lifted by its cam, when the nail which was resting against it enters the throat I, and its point is directed into the perforation made in the sole by the awl T, when the driver U is forced down by the coiled spring a, being liberated by its cam 17, and thus drives the nail into the shoe-sole, when the same operation is repeated until the whole shoe-sole is nailed, when the shoe is removed from the horn e bythedepression of the treadle f, and another shoe is placed on the top of the horn e, the spindle d of which is automatically locked, as before, by the bolt 1', aml so on.

WhatIwish to secure by Letters Patent, and claim, isv 1. In a nail-driving machine, the combination of the vertically-adj ustable horn-carrying spindle d and rotary horn e, coiled spring I", treadlef, slotted link g,locking-bolt i, inclined releasing-link l1, and springsf 'i, as set forth.

2. In anail-driving machine, the lockedrigid horn e,in combination with the oscillating head L, having throat-piece lattached, and the vertically-yielding presser-foot n, and verticallyyielding perforated nose-piece m, as set forth.

3. In a nail-driving machine, the combina- 5 tion of the oscillating head L, the yielding presser-t'oot bar at, its wedge n, and rocking lever q, as described, having wedge Q in its upper end, and adapted to be operated by the vertical motion of the said presser-foot bar to regulate the downward stroke of the awlbar t and driver-bar u, as set forth.

4. In a nail-drivingmachine, therigid throatpiece I, seemed to the swinging head L. and having perforation l, in combination with the yielding nose-piece m, its hollow tube m, shank m, and coiled spring m, as set forth.

In a nail-driving machine,in combination with the awl-bar t and its spring t, means for raising it to its highest position, an independent and separate locking device to hold it in such position, and a releasing device to automatically release it at the proper time, as set forth.

6. In a nail-driving machine, the combination of swinging head I1, vertically-movable awl-bar z, drivingshal't P, roll and pin t, foot t, locking-lever t spring t, and set-screw 1, adapted to strike against the recess t in the frame N, as set forth.

7. In a nail-driving machine, the combination of swinging head L, thumb-nut s stud 8', block 5', slotted rocking lever s, rock-shaft s, adjustable lever s, regulating-screws s, and cam s, as set forth.

8. In a nail-driving machine,in combination with the raceways e, nail-receiver w', sliding picker-bar c, and picker a", the springgage 10, with its wedge w, projection '10", regu' later-screw and adjustable screw 0', in the sliding picker-bar "0 as set forth.

In testimony whereof I have atiixed my signature in presence of two witnesses.

EDWARD M E RRITT.

Witnesses ALBAN ANDREN, ITIENRY UIIADBOUR-N. 

